CN109225305A - A kind of preparation method of porous cheap metal base ozone catalytic activator - Google Patents

A kind of preparation method of porous cheap metal base ozone catalytic activator Download PDF

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Publication number
CN109225305A
CN109225305A CN201811255130.4A CN201811255130A CN109225305A CN 109225305 A CN109225305 A CN 109225305A CN 201811255130 A CN201811255130 A CN 201811255130A CN 109225305 A CN109225305 A CN 109225305A
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porous
ozone catalytic
metal base
preparation
catalytic activator
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CN201811255130.4A
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Inventor
卞兆勇
马宁
张占勋
梁琪
王辉
张梦
潘恬豪
柴云
范飞
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Beijing Wanbangda Environmental Protection Technology Co Ltd
Beijing Normal University
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Beijing Wanbangda Environmental Protection Technology Co Ltd
Beijing Normal University
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Priority to CN201811255130.4A priority Critical patent/CN109225305A/en
Publication of CN109225305A publication Critical patent/CN109225305A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/24—Nitrogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/78—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with alkali- or alkaline earth metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/613—10-100 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/615—100-500 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/643—Pore diameter less than 2 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/647—2-50 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/651—50-500 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/653—500-1000 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/657—Pore diameter larger than 1000 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/082—Decomposition and pyrolysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/12—Oxidising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/16—Reducing
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C02F2101/345—Phenols
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses a kind of preparation methods of porous cheap metal base ozone catalytic activator, the porous ozone catalytic activator is made of the controllable porous material matrix in aperture, and the porous material matrix includes that metal oxide precursor, inorganic skeleton material and auxiliary agent are prepared through following steps: metal oxide precursor being dissolved in water and is prepared into slurry；Inorganic skeleton material and auxiliary agent are ground into powder, then slurry is uniformly added into the powder, mud powder is made；Resulting mud powder is squeezed or mechanical roll forms；Moulding material is put into drying in baking oven, drying to moisture is lower than 5%；By the moulding material roasting after drying, the product prepared by is porous cheap metal base ozone catalytic activator.

Description

A kind of preparation method of porous cheap metal base ozone catalytic activator
Technical field
The present invention relates to a kind of preparation methods of porous cheap metal base ozone catalytic activator.
Background technique
Ozone has very strong oxidation susceptibility, can aoxidize numerous organic matters in water, therefore, ozonation technology is in water process Field is concerned.But there is certain deficiencies for traditional ozone oxidation, if the solubility of ozone in water is low, the utilization of ozone Rate is low, and reacting with organic matter has very strong selectivity, and reaction rate is there are larger difference, and oxidation effectiveness is unstable etc.；This Its application is limited to a certain extent.
A kind of preparation of Refinery Wastewater ozone catalytic oxidation catalyst disclosed in Publication No. CN101982237A Method, this method are granulated, are conserved, are dried, are roasted using the mixture that amorphous alumina is formed with FeOOH powder Finished catalyst is obtained after burning, the preparation method of the catalyst is easy and environmentally protective, however, refining oil using the catalyst treatment The service life of catalyst is short when waste water, and the performances such as catalytic efficiency are bad.Involved by Publication No. CN102923913A And catalyst treatment refinery(waste) water when there is also the defects that above-mentioned catalyst service life is short and catalytic performance is bad.
Summary of the invention
In order to solve the above-mentioned technical problem, the object of the present invention is to provide a kind of porous cheap metal base ozone catalytics to activate The preparation method of agent.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of preparation method of porous cheap metal base ozone catalytic activator, the porous ozone catalytic activator is by hole The controllable porous material matrix of diameter is constituted, and the porous material matrix includes metal oxide precursor, inorganic skeleton material Material and auxiliary agent are prepared through following steps:
(1) metal oxide precursor is dissolved in water and is prepared into slurry；
(2) inorganic skeleton material and auxiliary agent are ground into powder, the slurry of step (1) is then uniformly added into the powder In mud powder is made；
(3) resulting mud powder is squeezed or mechanical roll forms；
(4) moulding material of step (3) is put into drying in baking oven, drying to moisture is lower than 5%；
(5) moulding material after drying is roasted, the product prepared by is that porous cheap metal base ozone catalytic is living Agent.
Further, the metal oxide precursor be iron, cobalt, nickel, copper, manganese, selenium, magnesium, titanium, chromium, cadmium nitrate, One or more of carbonate or oxide mixture.
Further, the weight percent that the metal oxide accounts for total amount is 1-35%, and inorganic skeleton material accounts for always The weight percent of amount is 60-99%, and the weight percent that auxiliary agent accounts for total amount is 0.1-5%.
Further, the inorganic skeleton material be bentonite, calcite, talcum powder, graphite powder, coal dust, bauxite, One of montmorillonite, kaolin, aluminium oxide, diaspore material or a variety of mixtures.
Further, the auxiliary agent is sodium bicarbonate, ammonium hydrogen carbonate, precipitated calcium carbonate, potassium alum, ammonia-alum, phosphoric acid One or more of hydrogen calcium, potassium hydrogen tartrate, polystyrene microsphere, poly (methyl methacrylate) micro-sphere mixture.
Further, step (4) drying to moisture is lower than 2%.
Further, the maturing temperature in the step (5) is 350-1100 DEG C, time 0.5-5h.
Further, the roasting is sintered in reduction or oxidizing atmosphere.
Further, molding material is sphere, partial size 1-20mm in the step (3).
Compared with prior art, advantageous effects of the invention
The porous ozone catalytic activator for being applied to COD in removal waste water of the invention has ozone oxidation efficiency height, urges Agent chemical stability is good, high mechanical strength and has the characteristics that long service life, can be widely applied at industrial wastewater Reason, mine are smelted, are electroplated, electronics produces, in printing and dyeing garment making industry, can also be applied to municipal sewage, river, lake and other ground The improvement being lauched.
Specific embodiment
A kind of preparation method of porous cheap metal base ozone catalytic activator, the porous ozone catalytic activator is by hole The controllable porous material matrix of diameter is constituted, and the porous material matrix includes metal oxide precursor, inorganic skeleton material Material and auxiliary agent are prepared through following steps:
(1) metal oxide precursor is dissolved in water and is prepared into slurry, concentration 5-40%；
(2) inorganic skeleton material and auxiliary agent are ground into powder, the slurry of step (1) is then uniformly added into the powder In mud powder is made；
(3) resulting mud powder is squeezed or machinery rolls the sphere for being 1-20mm at partial size；
(4) sphere of step (3) is put into drying in baking oven, drying to moisture is lower than 2%；
(5) by after drying sphere roast, maturing temperature be 350-1100 DEG C, time 0.5-5h, while in reduction or It is sintered in person's oxidizing atmosphere, the product prepared by is porous cheap metal base ozone catalytic activator.
Wherein: the metal oxide precursor is iron, cobalt, nickel, copper, manganese, selenium, magnesium, titanium, chromium, the nitrate of cadmium, carbonic acid One or more of salt or oxide mixture；The inorganic skeleton material be bentonite, calcite, talcum powder, One of graphite powder, coal dust, bauxite, montmorillonite, kaolin, aluminium oxide, diaspore material or a variety of mixtures；Institute The auxiliary agent stated is sodium bicarbonate, ammonium hydrogen carbonate, precipitated calcium carbonate, potassium alum, ammonia-alum, calcium monohydrogen phosphate, potassium hydrogen tartrate, polyphenyl One or more of ethylene microballoon, poly (methyl methacrylate) micro-sphere mixture.
The weight percent that the metal oxide accounts for total amount is 1-35%, and the inorganic skeleton material accounts for the hundred of total amount Divide than being 60-99%, the percentage that the auxiliary agent accounts for total amount is 0.1-5%.
Preferably, metal oxide 18%, inorganic skeleton material 80%, auxiliary agent 2%；Alternatively, metal oxide 2%, nothing Machine framework material 95%, auxiliary agent 3%；Alternatively, metal oxide 30%, inorganic skeleton material 65%, auxiliary agent 5%.
Embodiment 1
A kind of preparation method of porous cheap metal base ozone catalytic activator, the porous ozone catalytic activator is by hole The controllable porous material matrix of diameter is constituted, and the porous material matrix includes ferric nitrate 18%, bentonite 80% and carbonic acid Hydrogen sodium 3% is prepared through following steps:
(1) slurry, concentration 20% is made by ferric nitrate is soluble in water；
(2) powder is made by ball mill in bentonite and sodium bicarbonate, resulting slurry is then uniformly added into gained Powder in mud powder is made；
(3) mud powder passes through extruder extrusion forming or the mechanical particle rolled at partial size for 12mm；
(4) resulting particle is put into drying in baking oven, drying to moisture is lower than 2%；
(5) finally the particle after drying is put into electric furnace and is roasted, the temperature of electric furnace is controlled at 500 DEG C, roasting Between be 4h, and be sintered in reduction or oxidizing atmosphere, so that required product, the as porous cheap metal base of the application be made Ozone catalytic activator.
Embodiment 2
A kind of preparation method of porous cheap metal base ozone catalytic activator, the porous ozone catalytic activator is by hole The controllable porous material matrix of diameter is constituted, the porous material matrix include ferric nitrate and copper carbonate 1:1 mixture 2%, Calcite 95% and potassium alum 3% are prepared through following steps:
(1) slurry, concentration 30% is made by ferric nitrate and copper carbonate 1:1 mixture are soluble in water；
(2) powder is made by ball mill in calcite and potassium alum, be then uniformly added into resulting slurry resulting Mud powder is made in powder；
(3) mud powder passes through extruder extrusion forming or the mechanical particle rolled at partial size for 10mm；
(4) resulting particle is put into drying in baking oven, drying to moisture is lower than 2%；
(5) finally the particle after drying is put into electric furnace and is roasted, the temperature of electric furnace is controlled at 640 DEG C, roasting Between be 3h, and be sintered in reduction or oxidizing atmosphere, so that required product, the as porous cheap metal base of the application be made Ozone catalytic activator.
The partial size of porous cheap metal base ozone catalytic activator prepared by preparation method according to the application is 1- 20mm, porosity 10-80%, aperture 1nm-5000nm, specific surface area are 10-200 ㎡/g.It is applied to removal waste water The porous ozone catalytic activator of middle COD has that ozone oxidation efficiency is high, catalyst chemical stability is good, high mechanical strength, simultaneously And have the characteristics that long service life, it can be widely applied to Industrial Wastewater Treatment, mine smelts, plating, electronics production, printing and dyeing In garment making industry, the improvement of municipal sewage, river, lake and other underground water can also be applied to.
Test example
Preparation phenol concentration is 200mg L-1Phenol solution, COD are 476.1mg L-1, 100ml phenol solution is placed on instead It answers in device, the porous cheap metal base ozone catalytic activator of preparation is added, and be passed through ozonation aerated 30min, every 10min Sampling.Phenol concentration is measured using high performance liquid chromatography.The concentration of phenol has already decreased to 4mg L after reaction 30min-1Below； Using the COD concentration after the measurement reaction of COD Quick testing instrument, test result shows that COD value is after reacting 30min to be reduced to 50mg L-1Below.
Test result show the removal efficiency of phenol in the phenol solution of preparation up to 98% or more, it is quiet by 10 batches After state experiment, removal efficiency is not substantially reduced.And in waste water COD removal rate up to 89% or more.
Embodiment described above is only that preferred embodiment of the invention is described, and is not carried out to the scope of the present invention It limits, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention Various changes and improvements, should all fall into claims of the present invention determine protection scope in.

Claims (9)

1. a kind of preparation method of porous cheap metal base ozone catalytic activator, it is characterised in that: the porous ozone catalytic Activator is made of the controllable porous material matrix in aperture, the porous material matrix include metal oxide precursor, Inorganic skeleton material and auxiliary agent are prepared through following steps:
(1) metal oxide precursor is dissolved in water and is prepared into slurry；
(2) inorganic skeleton material and auxiliary agent are ground into powder, then the slurry of step (1) is uniformly added into the powder and is made At mud powder；
(3) resulting mud powder is squeezed or mechanical roll forms；
(4) moulding material of step (3) is put into drying in baking oven, drying to moisture is lower than 5%；
(5) moulding material after drying is roasted, the product prepared by is porous cheap metal base ozone catalytic activator.
2. the preparation method of porous cheap metal base ozone catalytic activator according to claim 1, it is characterised in that: institute Stating metal oxide precursor is in iron, cobalt, nickel, copper, manganese, selenium, magnesium, titanium, chromium, the nitrate of cadmium, carbonate or oxide One or more kinds of mixtures.
3. the preparation method of porous cheap metal base ozone catalytic activator according to claim 1 or 2, feature exist In: the weight percent that the metal oxide accounts for total amount is 1-35%, and inorganic skeleton material accounts for the weight percent of total amount For 60-99%, the weight percent that auxiliary agent accounts for total amount is 0.1-5%.
4. the preparation method of porous cheap metal base ozone catalytic activator according to claim 1, it is characterised in that: institute The inorganic skeleton material stated is bentonite, calcite, talcum powder, graphite powder, coal dust, bauxite, montmorillonite, kaolin, oxidation One of aluminium, diaspore material or a variety of mixtures.
5. the preparation method of porous cheap metal base ozone catalytic activator according to claim 1, it is characterised in that: institute The auxiliary agent stated is sodium bicarbonate, ammonium hydrogen carbonate, precipitated calcium carbonate, potassium alum, ammonia-alum, calcium monohydrogen phosphate, potassium hydrogen tartrate, polyphenyl One or more of ethylene microballoon, poly (methyl methacrylate) micro-sphere mixture.
6. the preparation method of porous cheap metal base ozone catalytic activator according to claim 1, it is characterised in that: institute Step (4) drying is stated to moisture lower than 2%.
7. the preparation method of porous cheap metal base ozone catalytic activator according to claim 1, it is characterised in that: institute Stating the maturing temperature in step (5) is 350-1100 DEG C, time 0.5-5h.
8. the preparation method of porous cheap metal base ozone catalytic activator according to claim 1 or claim 7, feature exist In: the roasting is sintered in reduction or oxidizing atmosphere.
9. the preparation method of porous cheap metal base ozone catalytic activator according to claim 1, it is characterised in that: institute Stating molding material in step (3) is sphere, partial size 1-20mm.
CN201811255130.4A 2018-10-26 2018-10-26 A kind of preparation method of porous cheap metal base ozone catalytic activator Pending CN109225305A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115709057A (en) * 2022-10-20 2023-02-24 北京中电加美环保科技有限公司 Ozone oxidation catalyst for industrial wastewater treatment and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1555254A1 (en) * 2002-10-23 2005-07-20 Ngk Insulators, Ltd. Method for manufacturing porous honeycomb structure and honeycomb body
CN105498777A (en) * 2015-12-06 2016-04-20 苏州科环环保科技有限公司 Preparation method of metal loaded catalyst with aluminum silicate as carrier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1555254A1 (en) * 2002-10-23 2005-07-20 Ngk Insulators, Ltd. Method for manufacturing porous honeycomb structure and honeycomb body
CN105498777A (en) * 2015-12-06 2016-04-20 苏州科环环保科技有限公司 Preparation method of metal loaded catalyst with aluminum silicate as carrier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115709057A (en) * 2022-10-20 2023-02-24 北京中电加美环保科技有限公司 Ozone oxidation catalyst for industrial wastewater treatment and preparation method thereof
CN115709057B (en) * 2022-10-20 2023-10-27 北京中电加美环保科技有限公司 Ozone oxidation catalyst for industrial wastewater treatment and preparation method thereof

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Application publication date: 20190118